24 ab 1 vf d ch – Fedders CH18ABD1 User Manual

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18 = 18000 BTU/H [5.28 kW]
24 = 24000 BTU/H [7.03 kW]
30 = 30000 BTU/H [8.79 kW]
36 = 36000 BTU/H [10.55 kW]
42 = 42000 BTU/H [12.31 kW]
48 = 48000 BTU/H [14.07 kW]
60 = 60000 BTU/H [17.5 kW]

1 = 208/230 Volts, 1 Phase, 60 Hz
2 = 230 Volts, 1 Phase, 50 Hz
3 = 208/230 Volts, 3 Phase, 60 Hz
4 = 460 Volts, 3 Phase, 60 Hz
5 = 230 Volts, 3 Phase, 50 Hz
6 = 380 Volts, 3 Phase, 50 Hz

C = Air Conditoner
CH = Heat Pump

F= Fedders

Poduct Type

Brand

V = Sweat

Fitting Type

D = R-22 Refrigerant
E = R-407C Refrigerant
F = R-410A Refrigerant

Variations

Electrical Designation

B = 21 1/2” W x 21 1/2” D x H
C = 29 1/2” W x 29 1/2” D x H

Chassis Size

Nominal Capacity

Series

CONDENSING UNIT NOMENCLATURE

The heat pump has a control system designed to defrost the
outdoor coil by warming it up to keep it clear of ice and
operating efficiently. When the temperature drops below 40°F,
the control system will sense that conditions are right for the
formation of ice. After a time period of 60 to 90 minutes, the
heat pump will go into the defrost mode. At this time, the
outdoor coil may be heavily iced or no ice may be visible,
depending on the outdoor humidity. When the unit starts the
defrost mode, the outdoor fan will turn off and a hissing noise
may be heard that disappears as defrost continues. As the
outdoor coil warms, you may notice steam coming off the coil.
When the coil reaches a predetermined temperature (usually
within 7 minutes), the defrost cycle will end. You may hear a
hiss as the unit switches back to the normal heating mode.

DEFROST OPERATION

CAUTION

Wait at least 3 minutes after turning the heat pump off
before trying to restart. If an attempt is made to start the
compressor before the refrigerant pressures are equalized,
the unit may fail to restart. An additional waiting period will
then be required before restarting.

1. Keep the outdoor unit clean. Wash it down with a garden

hose if necessary.

For continuing high performance and to minimize possible
equipment failure, periodic maintenance must be performed on
this equipment. Frequency of maintenance may vary depending
upon geographic areas, such as coastal applications.

MAINTENANCE INSTRUCTIONS

BE SURE THE UNIT DISCONNECT IS IN THE “OFF”
POSITION AND THAT ALL ELECTRICAL POWER TO THE
UNIT IS TURNED “OFF” BEFORE CLEANING THE SYSTEM.

2. Remove any loose grass, leaves, papers, etc., from the area

around the condenser coil. These could reduce the air supply
through the coil and reduce the amount of cooling.

3. Always install and keep system filters clean. Consult your

licensed Contractor for filter replacement schedules and
instructions.

SERIOUS PERSONAL INJURY OR DEATH MAY RESULT IF
WATER SPRAY IS DIRECTED TOWARD LIVE ELECTRICAL
CONNECTIONS OR POWER SOURCES.

WARNING